Privacy Policy

TwinCalc collects minimal personal information:

• Newsletter subscription: If you subscribe to our newsletter, we collect your email address via Netlify Forms.
• Evidence report launch interest: If you request a launch notification, we collect your email address, language, generic form source, offer entry point, coarse acquisition channel, search-engine name, landing path and conversion-page path. We do not collect the search query. Calculator answers are never attached.
• Calculator inputs: All data entered into the twin probability calculator is processed entirely in your browser. We do not collect, store, or transmit any health-related information you provide.

We use your information solely for the following purposes:

• Requested updates: To send the newsletter or the one-off product launch notification you requested.
• Service improvement: Aggregated, anonymous usage data (page views) may be used to improve the site experience.

We do not sell, rent, or share your personal information with third parties for marketing purposes.

TwinCalc uses minimal or no cookies:

• No tracking cookies: We do not use advertising or tracking cookies.
• No third-party analytics: We do not use Google Analytics or similar tracking services.
• Session-only attribution: First-party session storage keeps a coarse channel, search-engine name and landing path. Nothing is sent when you merely browse; these values are submitted only with a form you choose to send.
• Essential cookies only: Any cookies used are strictly necessary for site functionality (e.g., language preference).

TwinCalc uses the following third-party services:

• Netlify: Our website is hosted on Netlify. Netlify may collect standard server logs (IP address, browser type, referring page) as part of their hosting service. See Netlify's Privacy Policy.

We do not integrate any advertising networks, social media trackers, or third-party analytics tools.

We retain your data as follows:

• Newsletter and launch-notification emails: Stored by Netlify Forms until you unsubscribe, request deletion or the stated purpose ends.
• Calculator data: Not retained. All calculations are performed client-side and no data is sent to our servers.

You have the following rights regarding your personal data:

• Unsubscribe: You can unsubscribe from our newsletter at any time using the link in each email.
• Data deletion: You can request deletion of your email from our records by contacting us at privacy@twin-chance.com.
• Access: You can request a copy of any personal data we hold about you.
• Correction: You can request correction of any inaccurate personal data.

For any privacy-related questions or requests, please contact us at:

privacy@twin-chance.com

We aim to respond to all privacy inquiries within 30 days.

We may update this privacy policy from time to time to reflect changes in our practices or applicable laws. When we make significant changes, we will update the "Last updated" date at the top of this page.

We encourage you to review this policy periodically to stay informed about how we protect your information.